Tetrahedron p. 2897 - 2904 (1982)
Update date:2022-08-05
Topics:
Machado-Araujo, Francisca W. L.
Gore, Jacques
Organolithium react with 5-ethoxy 2,5 dihydro-furan-2-one 1, easily obtained by photoxidation of furfural, leading selectively to 5-hydroxy-2,5-dihydro-furans 4 or to 5-ethoxy-2,5 dihydro-furans 5 disubstituted on carbon 4; the oxydation of the hemi-acetals 4 transforms them with good yields in Δ-2 butenolides disubstituted on carbon 4.
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